Today we are going to talk about three new graphics accelerators on Radeon HD 79xx GPUs, which have different PCBs, unique cooling systems and increased operational clock speeds. We will also test CrossFireX configurations and see how well this technology works for Tahiti graphics processors.

It hasn’t changed since then except for the different shape of the casing.

Even the fan marking is the same:

Of course, there are different heatsinks on the power components due to the PCB layout of the Radeon HD 7970:

Sapphire's cooler is as efficient as before. At a clock rate of 950 MHz in the automatic fan regulation mode the GPU was only 70°C hot, the fans rotating at 2150 RPM. When the GPU was clocked at 1000 MHz, it was 4°C colder because the fans worked at 2520 RPM.

At the maximum fan speed of 3250 RPM, the GPU was 61 and 62°C hot at 950 and 1000 MHz, respectively.